mes-client/PLCDataReader/RichTextAutoBottom.cs

using System;
using System.Windows.Forms;

namespace UAS_PLCDataReader
{
    public partial class RichTextAutoBottom : RichTextBox
    {
        public RichTextAutoBottom()
        {
            InitializeComponent();
            TextChanged += RichTextBox_TextChange;
        }

        private void RichTextBox_TextChange(object sender, EventArgs e)
        {
            SelectionStart = Text.Length;
            ScrollToCaret();
        }
    }
}